and Fuels Changzhi Li,† Xiaochen Zhao,† Aiqin Wang,† George W. Huber,†,‡ and Tao Zhang*,† †State Key Laborotary of Catalysis, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China ‡Department of Chemical and Biological Engineering, University of WisconsinMadison, Madison, Wisconsin 53706, United States

Catalytic Transformation of Lignin for the Production of Chemicals and Fuels

Recent developments of electro-oxidation in water treatment — A review

Anthropogenic climate change, principally induced by the large volume of carbon dioxide emission from the global economy driven by fossil fuels, has been observed and scientifically proven as a major threat to civilization. Meanwhile, fossil fuel depletion has been identified as a future challenge. Lignocellulosic biomass in the form of organic residues appears to be the most promising option as renewable feedstock for the generation of energy and platform chemicals. As of today, relatively little bioenergy comes from lignocellulosic biomass as compared to feedstock such as starch and sugarcane, primarily due to high cost of production involving pretreatment steps required to fragment biomass components via disruption of the natural recalcitrant structure of these rigid polymers; low efficiency of enzymatic hydrolysis of refractory feedstock presents a major challenge. The valorization of lignin and cellulose into energy products or chemical products is contingent on the effectiveness of selective depolymerization of the pretreatment regime which typically involve harsh pyrolytic and solvothermal processes assisted by corrosive acids or alkaline reagents. These unselective methods decompose lignin into many products that may not be energetically or chemically valuable, or even biologically inhibitory. Exploring milder, selective and greener processes, therefore, has become a critical subject of study for the valorization of these materials in the last decade. Efficient alternative activation processes such as microwave- and ultrasound irradiation are being explored as replacements for pyrolysis and hydrothermolysis, while milder options such as advanced oxidative and catalytic processes should be considered as choices to harsher acid and alkaline processes. Herein, we critically abridge the research on chemical oxidative techniques for the pretreatment of lignocellulosics with the explicit aim to rationalize the objectives of the biomass pretreatment step and the problems associated with the conventional processes. The mechanisms of reaction pathways, selectivity and efficiency of end-products obtained using greener processes such as ozonolysis, photocatalysis, oxidative catalysis, electrochemical oxidation, and Fenton or Fenton-like reactions, as applied to depolymerization of lignocellulosic biomass are summarized with deliberation on future prospects of biorefineries with greener pretreatment processes in the context of the life cycle assessment.

/pdf/lignocellulosic-biomass-transformations-via-greener-161n9s7jup.pdf

Lignocellulosic Biomass Transformations via Greener Oxidative Pretreatment Processes: Access to Energy and Value-Added Chemicals.

Heterogeneous catalytic oxidation for lignin valorization into valuable chemicals: what results? What limitations? What trends?

Biomass is renewable and the most abundant carbon resource, and it shows great potential for sustainable production of chemicals in the future With respect to limited fossil reserves, biomass conv

Sustainable Productions of Organic Acids and Their Derivatives from Biomass via Selective Oxidative Cleavage of C-C bond

Electrochemical oxidation of lignin by two typical electrodes: Ti/SbSnO2 and Ti/PbO2

In electrochemiluminescence(ECL) field, the shortage of potential-resolved luminophores severiously limited the development of biosensors for accurate assay such as ratiometric biosensors. In this work, N,N′-dimethyl-3,4,9,10-perylenedicarboximide(PDI-CH3) and graphite-like carbon nitride(g-C3N4) nanosheet was firstly reported to produce potential-resolved ECL with coreactant K2S2O8 between 0 and − 1.2 V. And there was good overlap between the ECL spectrum of g-C3N4 and the absorption spectra of PDI-CH3. Moreover, PDI-CH3 and g-C3N4 were used to construct ECL ratiometric system for sandwiched immunosensors to detect tumor marker carcinoembryonic antigen (CEA), in which g-C3N4 was used as ECL platform and PDI-CH3 was used as ECL label of secondary antibody(Ab2). Increasing the CEA concentration, the loading of PDI-CH3 on the electrode stepwisely increased, which leaded to gradual increase of ECLPDI-CH3 at − 0.5 V and significant decrease of ECLg-C3N4 at − 1.2 V due to the high quenching effects of PDI-CH3 to g-C3N4 through dual-quenching mechanism: competitive consumption of coreactant and ECL resonance energy transfer. And the ECLPDI-CH3/ECLg-C3N4 showed ultrasensitive linear response for CEA between 0.1 fg mL−1 and 1 ng mL−1 with detection limit 0.052 fg mL−1 according to IUPAC criterion. In addition, the proposed ratiometric biosensor exhibited good recovery in human serum samples. 

Perylene Diimide and g-C3N4 Nanosheet as Potential-Resolved Cathode Luminophores for Ultrasensitive Ratiometric Electrochemiluminescence Immunosensor

Chemical looping partial oxidation (CLPO) of toluene on LaFeO3 perovskites for tunable syngas production

Controllable construction of FeCo nanoparticles embedded 3D porous N-doped carbon nanonetworks as high efficiency bifunctional electrocatalysts for Zn-air batteries

Lead-free halide perovskites have great potential as stable and nontoxic optoelectronic materials. As a promising photovoltaic candidate, AgBiI4 has attracted attention due to the eco-friendly property and strong stability, but...

Tuning the Morphology and Optoelectronic Properties of AgBiI4 Film through Isopropanol Treatment

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